gimike812
NAXJA Forum User
- Location
- Tucson, AZ
What are anyones thoughts on milling .010-.020 off a 4.0 head for a bumb in compression when I rework my head and a valve job/ gasket match. Its a renix 4.0 I dont want to swap to the HO setup just a little more pep. I have built a sick 225 slant 6 head and I cut over .120 on that motor to raise my compression but I have no experiance with the 4.0s. What is the stock compression anyway.